Precision bore fused silica tubing with tapered section



FIG. 1 is a front elevation of a precision bore fused silica tubing with tapered section, showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a longitudinal cross-section taken on line 4--4 of FIG. 3. 

The ornamental design for a precision bore fused silica tubing with tapered section, as shown. 